2005454377 has 2 divisors, whose sum is σ = 2005454378. Its totient is φ = 2005454376.

The previous prime is 2005454369. The next prime is 2005454411. The reversal of 2005454377 is 7734545002.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1843757721 + 161696656 = 42939^2 + 12716^2 .

It is a cyclic number.

It is not a de Polignac number, because 2005454377 - 2³ = 2005454369 is a prime.

It is not a weakly prime, because it can be changed into another prime (2005454677) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1002727188 + 1002727189.

It is an arithmetic number, because the mean of its divisors is an integer number (1002727189).

Almost surely, 2^2005454377 is an apocalyptic number.

It is an amenable number.

2005454377 is a deficient number, since it is larger than the sum of its proper divisors (1).

2005454377 is an equidigital number, since it uses as much as digits as its factorization.

2005454377 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 117600, while the sum is 37.

The square root of 2005454377 is about 44782.2998181201. The cubic root of 2005454377 is about 1261.0653576762.

Adding to 2005454377 its reverse (7734545002), we get a palindrome (9739999379).

The spelling of 2005454377 in words is "two billion, five million, four hundred fifty-four thousand, three hundred seventy-seven".